In TurboTax Online (which it appears you're using), there is no additional charge to e-file either a federal OR state return. The charges you're seeing are for the tax preparation programs, and still apply even if you mail your returns.
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***